Audio qulity from headphone jack - Verizon LG G3

Just wanted to know if anyone else noticed faint buzzing/scratching/hissing noises coming out of their headphone jack...
(and yes I have tested several headphones/earbuds and tested with my MDRv6's all with the same results. Its definitely the phone not the headphones)
When I insert my headphones there is a quick beeping sound that plays for a second or so then goes quiet.
When music is playing, especially soft music (a particular song was Instant Crush; Daft Punk) there is a hiss in the background, specifically when certain tones play.
It was terribly noticeable right at the beginning of a few songs, especially the one I listed above.
I also have button sound effects enabled. So When I press one of the soft UI buttons it makes a tick noise. However for about 5 seconds after the tick there is a long hiss then silence until I press another button.
The volume of the hissing/scratching noises is directly related to the actual volume of the device and the note playing.
Im on stock build 11c w/root, and I havent found a lot of info about this problem.
Just wondering if anyone has noticed this, or if this is a known issue?

If your phone is warranteed, I would bring it in
The G3 boasts an AMPLIFIED 1 watt sound speaker, which means there is a powered sound processor.. Unless the jack needs to be cleaned, I would lean toward thinking there is a defect in your phones jack, or sound assembly. I think its more than likely a defective jack, especially if there are no sounds like you are describing when headphones are not in use

Yeah the phone is brand new. I think I'm going to RMA....
Sent from my VS985 4G using XDA Free mobile app

I've noticed it. Seems to be worse when charging.

Verizon remotely detected root, warranty voided.
Posted about it here.
http://forum.xda-developers.com/showthread.php?p=57355721
Word of warning before calling Verizon
Sent from my VS985 4G using XDA Free mobile app

nuke235 said:
Just wanted to know if anyone else noticed faint buzzing/scratching/hissing noises coming out of their headphone jack...
(and yes I have tested several headphones/earbuds and tested with my MDRv6's all with the same results. Its definitely the phone not the headphones)
When I insert my headphones there is a quick beeping sound that plays for a second or so then goes quiet.
When music is playing, especially soft music (a particular song was Instant Crush; Daft Punk) there is a hiss in the background, specifically when certain tones play.
It was terribly noticeable right at the beginning of a few songs, especially the one I listed above.
I also have button sound effects enabled. So When I press one of the soft UI buttons it makes a tick noise. However for about 5 seconds after the tick there is a long hiss then silence until I press another button.
The volume of the hissing/scratching noises is directly related to the actual volume of the device and the note playing.
Im on stock build 11c w/root, and I havent found a lot of info about this problem.
Just wondering if anyone has noticed this, or if this is a known issue?
Click to expand...
Click to collapse
Just got my G3 a week ago and didnt use headphones until I read your post, I tested many different songs with different players, stock player, google player, Iheart radio, pandora, etc, headphone sound is crystal clear on mine, I dont get any beeps either like you described, I did notice you need to make sure the jack is pushed in good and tight, I put it in and thought it was all the way in and sound was crappy, pushed a bit harder and it clicked in good and sound was great, do you have a case that may be preventing the jack from being pushed in all the way, I had a phone in the past that this happened to me with, had to cut away some rubber on the jack to make it fit snug, if none of those are the issue, I would look into a warranty claim. I am using the beats audio earbuds that came with my HTC M7 I had before this phone.

kchinth said:
I've noticed it. Seems to be worse when charging.
Click to expand...
Click to collapse
That could be the issue. I know on the 2012 Nexus 7, it's really bad. It's supposedly due to the microUSB port and the headphone jack sharing the same circuit, or some engineering thing like.
Wonder if it's the same or if they didn't shield the headphone jack very well and it's picking up interference from the microUSB port when charging?

I didn't want to leave this up in the air so I figured I would post an update.
I replaced my G3 through Verizon for a brand new unit. My first phone was of an earlier batch (came with the 10b update) the second one was of a later batch and had 11b pre-installed.
Both phones had the same issue. There is a hissing noise/distortion that comes from the headphone jack. Even when not playing music.
I noticed it on other phones too but not anywhere nearly as much. I understand that any audio source is going to have a little background interference but the G3 definitely has a more significant issue than others.
However it seems to be entirely dependant on what headphones you are using.
1st. I tested first with my Sony MDR-v6's which the problem is most noticeable on. Extreme hissing/background noise.
2nd. Then I used a pair of Audio Techina ATH-PRO500's and the problem was almost unnoticeable.
3rd. I also tried my Steel Series Siberia v2's and the problem was again almost completely gone.
4th. I also used my receiver at home. JVC 5.1 channel receiver with RCA speakers and a Kenwood sub, didn't notice the issue at all. However there where some occasional strange popping noises when no music was playing I didn't get on my GS3 or other MP3 player.
5th. Finally I tried the ear buds that came with my Galaxy S3 and the distortion was again totally noticeable with and without music playing.
This is most definitely an issue that totally depends on what headphones you are using not sure if it has to do with sensitivity or impedance (this is what most people think) however it is most definitely an issue. I saw a few threads saying that audio issues were a problem in Android 4.4.2 however LG/Verizon have yet to release a stock base on anything but.
I suppose I could flash AOSP 4.4.4 and see if the problem persists but I don't know if that would even be worth it.
2 phones and 4 headsets later this is starting to seem like either a software or a design issue.
However I have nothing but good to say about every other bit of this phone. Really besides the audio jack top notch all around.
Sent from my Stumped and Bumped Verizon LG G3

I might have found a workaround for this
I have tested 3 LG D855 and all of them have noise/static/high-freq leak from the processor out to the headphones. It might be a faulty design for the headphones amplification stage for headphones (when the headphones logo appears on the status bar). However, when using line level output (the jack appears on the status bar) the problem does not reproduce.
Therefore the workaround I've found is to trick the phone into line level output mode and then plug the headphones. To do this you need to plug in a 3.5mm jack extensor or a 2-to-1 3.5mm Y-adapter with no load, that's it, with nothing connected to it. At that moment, the phone will activate the line level output mode. Only after that you will connect the headphones, and you'll see there are no artifacts on the audio.
That being said, I'm not sure this will work with all kind of headphones as I have only tried with mines that are low-impedance ones, but on those it works perfectly. To be checked if the level of the signal in line mode is enough to drive other headphones.
In any case, it is a shame this happens with a high-end and expensive smartphone. I was hopping this will be fixed in a newer hardware revision but I got two replacements of mine and no luck. I have read somewhere this might be a flaw in Snapdragon 801, as it integrates completely the signal routings but isolates badly highfreq noise from processor stages, etc. etc. but I do not remember where I did read it unfortunately.
I hope this helps!

drondron said:
I have tested 3 LG D855 and all of them have noise/static/high-freq leak from the processor out to the headphones. It might be a faulty design for the headphones amplification stage for headphones (when the headphones logo appears on the status bar). However, when using line level output (the jack appears on the status bar) the problem does not reproduce.
Therefore the workaround I've found is to trick the phone into line level output mode and then plug the headphones. To do this you need to plug in a 3.5mm jack extensor or a 2-to-1 3.5mm Y-adapter with no load, that's it, with nothing connected to it. At that moment, the phone will activate the line level output mode. Only after that you will connect the headphones, and you'll see there are no artifacts on the audio.
That being said, I'm not sure this will work with all kind of headphones as I have only tried with mines that are low-impedance ones, but on those it works perfectly. To be checked if the level of the signal in line mode is enough to drive other headphones.
In any case, it is a shame this happens with a high-end and expensive smartphone. I was hopping this will be fixed in a newer hardware revision but I got two replacements of mine and no luck. I have read somewhere this might be a flaw in Snapdragon 801, as it integrates completely the signal routings but isolates badly highfreq noise from processor stages, etc. etc. but I do not remember where I did read it unfortunately.
I hope this helps!
Click to expand...
Click to collapse
Ive been having the same issue. I have a pair of Shure SE846 which are about 8ohms. I experience the poor audio, especially the noise in the left channel. I find that placing a call and then listening to music removes the left channel static but the sound is still kinda bad. Ill try your suggestion tonight and post back. Just wanted to let you know your not alone.
I despise my G3 because of this. Im looking to get a new phone unless I can fix this.

Nope, my sound is perfect on my high-end Sony over the ear phones. Crystal clear on pure stock G3 .

I haven't noticed any artifact issues on my phone when using headphones, however when I plug it into my vehicle and also plug in the charger that causes everything to go nuts. The USB interference causes a crazy amount of excess noise. I haven't ever actually tried listening to headphones while charging, so in the car is the only time I've ever noticed it. The same issue occurs when I plug in my Galaxy Tab Pro into the aux jack and charge it at the same time, so this is definitely not unique to the G3. I wish all phones had as good an amplifier as my HTC DNA does, I still use that thing for music because the sound is so good.

pitbull8265 said:
If your phone is warranteed, I would bring it in
The G3 boasts an AMPLIFIED 1 watt sound speaker, which means there is a powered sound processor.. Unless the jack needs to be cleaned, I would lean toward thinking there is a defect in your phones jack, or sound assembly. I think its more than likely a defective jack, especially if there are no sounds like you are describing when headphones are not in use
Click to expand...
Click to collapse
I'm having a different audio problem.
With headphones plugged in and listening to music using any player, the right side sound emits distortion/hissing noise at a certain frequencies. When I tested it with plugging a 3.5mm to 3.5mm to an external amp (JDS labs c5) the distortion/hissing noise is completely gone. So it's definitely not a faulty jack
The hissing is evident at the beginning of (first few seconds) Tina Area's Still Running and You set fire to my heart .
I'm testing it with sensitive iem (Westone Um3x).
So does this mean there is a problem with the internal amp of the g3 or more to do with the os bug that can be solved with a custom kernel or update.
Is this a common issue found on all g3s?

drondron said:
I have tested 3 LG D855 and all of them have noise/static/high-freq leak from the processor out to the headphones. It might be a faulty design for the headphones amplification stage for headphones (when the headphones logo appears on the status bar). However, when using line level output (the jack appears on the status bar) the problem does not reproduce.
Therefore the workaround I've found is to trick the phone into line level output mode and then plug the headphones. To do this you need to plug in a 3.5mm jack extensor or a 2-to-1 3.5mm Y-adapter with no load, that's it, with nothing connected to it. At that moment, the phone will activate the line level output mode. Only after that you will connect the headphones, and you'll see there are no artifacts on the audio.
That being said, I'm not sure this will work with all kind of headphones as I have only tried with mines that are low-impedance ones, but on those it works perfectly. To be checked if the level of the signal in line mode is enough to drive other headphones.
In any case, it is a shame this happens with a high-end and expensive smartphone. I was hopping this will be fixed in a newer hardware revision but I got two replacements of mine and no luck. I have read somewhere this might be a flaw in Snapdragon 801, as it integrates completely the signal routings but isolates badly highfreq noise from processor stages, etc. etc. but I do not remember where I did read it unfortunately.
I hope this helps!
Click to expand...
Click to collapse
Hi! This worked perfectly for me but for me instead of tricking the phone into line level output mode, I detaching one side of my headphones before plugging it into the headphone jack then reattached it afterwards. I'm using pair of sensitive iems (Westone um3x rc)
Everything is quit with no distortion, just how it should be!
One thing, is there an option within android or an app that can permanently enable line level mode ever time headphones are plugged in without having to trick it.
If so, I won't have to sent my phone for repair!
Also are there any disadvantages for using line level with headphones?

Fungus999 said:
Hi! This worked perfectly for me but for me instead of tricking the phone into line level output mode, I detaching one side of my headphones before plugging it into the headphone jack then reattached it afterwards. I'm using pair of sensitive iems (Westone um3x rc)
Everything is quit with no distortion, just how it should be!
One thing, is there an option within android or an app that can permanently enable line level mode ever time headphones are plugged in without having to trick it.
If so, I won't have to sent my phone for repair!
Also are there any disadvantages for using line level with headphones?
Click to expand...
Click to collapse
Using line out shouldn't make any difference on audio quality. It only disables the remote (buttons and microphone).
Would also really like a way to force the line-out mode. Btw, does this affect all G3s? Cause right now I'm not sure if it's worth the hassle of replacing it.

sulkie said:
Using line out shouldn't make any difference on audio quality. It only disables the remote (buttons and microphone).
Would also really like a way to force the line-out mode. Btw, does this affect all G3s? Cause right now I'm not sure if it's worth the hassle of replacing it.
Click to expand...
Click to collapse
I know but some how using line out causes the hissing from the right side to go away completely. Strange huh
Are you also having this problem?
I also don't want to return mine if it exists in all g3s and there's a easier work around.

Yea same thing. I have artifacts in the left channel except when I manage to force the phone to recognize the headphones as line-out. I did this with the adapter to test it and it's impractical if not impossible to use the same adapter all the time.
I'm gonna try doing this right this moment to see if it works: http://forum.xda-developers.com/lg-g3/help/hissing-noise-left-ear-playing-music-t2804065/page17

sulkie said:
Yea same thing. I have artifacts in the left channel except when I manage to force the phone to recognize the headphones as line-out. I did this with the adapter to test it and it's impractical if not impossible to use the same adapter all the time.
I'm gonna try doing this right this moment to see if it works: http://forum.xda-developers.com/lg-g3/help/hissing-noise-left-ear-playing-music-t2804065/page17
Click to expand...
Click to collapse
I don't use earphones with a volume remote or microphone so that's not a problem.
It could be more to do with the increase in output impedance but I might be wrong cos the volume level is identical to headphone out.
I'm also getting a lot of static background noise but it disappears after making and hanging up a call as mentioned in a thread.
But yeah a permanent fix by forcing it into line out or doing some changes in kernel would be much more convenient

Fungus999 said:
I don't use earphones with a volume remote or microphone so that's not a problem.
It could be more to do with the increase in output impedance but I might be wrong cos the volume level is identical to headphone out.
I'm also getting a lot of static background noise but it disappears after making and hanging up a call as mentioned in a thread.
But yeah a permanent fix by forcing it into line out or doing some changes in kernel would be much more convenient
Click to expand...
Click to collapse
Great news! I just tried the fix from that thread and it worked. Here's the post: http://forum.xda-developers.com/showpost.php?p=59601465&postcount=150
I'm using stock rom which had 3 mixer xml files and I edited 2 of them, mixer_paths.xml and mixer_paths_qcwcn.xml. Also, instead of changing the value to 0, I deleted the entire line as it was suggested later in the thread.
The artifacts/noise in the left channel are gone!

sulkie said:
Great news! I just tried the fix from that thread and it worked. Here's the post: http://forum.xda-developers.com/showpost.php?p=59601465&postcount=150
I'm using stock rom which had 3 mixer xml files and I edited 2 of them, mixer_paths.xml and mixer_paths_qcwcn.xml. Also, instead of changing the value to 0, I deleted the entire line as it was suggested later in the thread.
The artifacts/noise in the left channel are gone!
Click to expand...
Click to collapse
But mine is stock on stock Lollipop via official update and with the hiss coming from the right side.
Please excuses my ignorance but I know nothing about accessing and editing a ROM.
How do I get into the rom and into the file called system/etc"?

Related

[Q] Note's audio quality hiss?

I haven't seen this posted about the Note. Does anyone else have a bad hiss when listening to music? Using Google Music and spotify, there is a definite hiss in the background.
I realize the Note's audio chip isn't great but I wasn't expecting this. Coming from the Captivate, this is really annoying me at the moment.
I hear it only in headphones
I don't hear it on the speaker or via BT. Haven't used the headphone jack yet.
Right, only on headphones. Quite loud and intrusive. I listen to my good quality in-ears at work for hours every day. I can't believe just how crappy the sound is on this otherwise fantastic device.
Ok, you got me wondering so I put on a decent pair of over-the-ear cans and spent 10 minutes flipping through a half-dozen channels of XM (128 kbps streaming). Then 5 more minutes going through several high-quality MP3s (variable bitrate with a max of 224 kbps).
No hiss, no background noise at all during the soft parts. Cranked the volume up to max, no distortion. Very happy with the results - much better than my last phone, the onboard sound on that sucked.
I'm on the stock rom, are you using something else?
For mere there's some noise when I'm not listening to anything, but I only hear it on my headphones.
In car Hiss
have not noticed it with headphones...but.....While using the car dock, any pause in the music whether it be on Pandora, Google Music, or just no app selected, There is a really annoying hiss/feedback through the speakers in the car. This is using the audio output connected to my stereo's AUX input.
It's just like a bad ground "whine" on a stereo...speeds up and down with the car. Never did this before with any other phone/device, so I know it's the note or the dock. I have not tried connected directly to the headphone jack on the note, I'll have to try that out.
Yeah the skyrocket did that too. I have a video up on you tube of it.
rknight68 said:
have not noticed it with headphones...but.....While using the car dock, any pause in the music whether it be on Pandora, Google Music, or just no app selected, There is a really annoying hiss/feedback through the speakers in the car. This is using the audio output connected to my stereo's AUX input.
It's just like a bad ground "whine" on a stereo...speeds up and down with the car. Never did this before with any other phone/device, so I know it's the note or the dock. I have not tried connected directly to the headphone jack on the note, I'll have to try that out.
Click to expand...
Click to collapse
Sent from my SGH-I717R using XDA App
techntrek said:
Ok, you got me wondering so I put on a decent pair of over-the-ear cans and spent 10 minutes flipping through a half-dozen channels of XM (128 kbps streaming). Then 5 more minutes going through several high-quality MP3s (variable bitrate with a max of 224 kbps).
No hiss, no background noise at all during the soft parts. Cranked the volume up to max, no distortion. Very happy with the results - much better than my last phone, the onboard sound on that sucked.
I'm on the stock rom, are you using something else?
Click to expand...
Click to collapse
As stock as can be here. The hiss is most apparent at the beginning of the track when it starts playing but no music yet. As soon as the track starts playing, you can here it click on with the hiss.
Did I get a defective one?
I'm using a very good pair of in-ears (UE700s). I'll try to dig up some cans later to try it. Maybe directing sound directly onto the ear drums via in-ears picks up the hiss better (less natural filtering?).
Another thought: is there an internal amp volume/gain? Listening to the in-ears, it seems the media volume is very loud even at low settings and amps up quickly with each keypress. Maybe there is another sound tweak I can make somewhere.
rknight68 said:
have not noticed it with headphones...but.....While using the car dock, any pause in the music whether it be on Pandora, Google Music, or just no app selected, There is a really annoying hiss/feedback through the speakers in the car. This is using the audio output connected to my stereo's AUX input.
It's just like a bad ground "whine" on a stereo...speeds up and down with the car. Never did this before with any other phone/device, so I know it's the note or the dock. I have not tried connected directly to the headphone jack on the note, I'll have to try that out.
Click to expand...
Click to collapse
A common problem if you are also charging - you are setting up a ground loop. You can add a ground loop isolator on the audio cable (big and clunky), unplug the power, or unplug the audio (and use BT in its place).
---------- Post added at 02:48 PM ---------- Previous post was at 02:28 PM ----------
flintdragon said:
Did I get a defective one?
Click to expand...
Click to collapse
While I'm not a die-hard audiophile (I won't spend 10K on a sound system) I do consider myself to be pretty selective. Partly why I ripped my CD collection @ 224 and not something lower - I did lots of tests beforehand and still could hear subtle differences @ 192. Also why I rarely buy 128 kbps mp3s. Anyway, for better or for worse I just don't hear anything negative so maybe yours is defective. I will bust out some in-ear buds tonight and take another listen.
Another thought: is there an internal amp volume/gain? Listening to the in-ears, it seems the media volume is very loud even at low settings and amps up quickly with each keypress. Maybe there is another sound tweak I can make somewhere.
Click to expand...
Click to collapse
Often media players will have a separate volume from the phone's "media volume". Then there are separate "media volume" settings for BT and the jack. Then don't forget internal volume on BT headphones. It can take some fiddling to find the best combination.
rknight68 said:
have not noticed it with headphones...but.....While using the car dock, any pause in the music whether it be on Pandora, Google Music, or just no app selected, There is a really annoying hiss/feedback through the speakers in the car. This is using the audio output connected to my stereo's AUX input.
It's just like a bad ground "whine" on a stereo...speeds up and down with the car. Never did this before with any other phone/device, so I know it's the note or the dock. I have not tried connected directly to the headphone jack on the note, I'll have to try that out.
Click to expand...
Click to collapse
http://www.amazon.com/Kensington-Re...sr_1_sc_1?ie=UTF8&qid=1332269457&sr=8-1-spell
I had the same thing with all my devices. Its just bad ground. That cable will get you set straight.
I never listened to my note with headphones, just with my car stereo with that cable. I hear absolutely no hissing or whining noise, just absolute beautiful sound and bass. This phone is mounds better than the Captivate.
Well, I retried some EQ/volume apps that I might has used recently to make sure there isn't any overboost feature enabled but nothing I can do to solve my problem. argh...
I never tried headphones in my Note with the stock sound equalizer. I had already installed the Beats by Dre mod in the developer's forum.
Zero hum whatsoever, and my happy hardcore sounds amazing.
I too have hiss from the headphone jack. I just returned my first Note yesterday hoping that the hiss would go away. It did not. I use mine in the car with an adapter that hooks directly to the back of my radio (JVC proprietary style).
Sent from my SAMSUNG-SGH-I717 using XDA
dakleenupman said:
I too have hiss from the headphone jack. I just returned my first Note yesterday hoping that the hiss would go away. It did not. I use mine in the car with an adapter that hooks directly to the back of my radio (JVC proprietary style).
Sent from my SAMSUNG-SGH-I717 using XDA
Click to expand...
Click to collapse
Huh... I was about to return mine today but maybe it might be fruitless? Or maybe there is a large quantity with hiss and others without?
For those with no hiss, do you find the volume to be very loud? What I'm talking about is even at low settings, just 2-3 notches above silent, the volume is already pretty loud. My phone feels like the internal "gain" was set too high.
I know on my captivate, I could set the media volume to about 40% and still be comfortable. On my Note, it's about 20-30% if that.
Does volume of the note sounds real low to you compared to smaller phones???
klee2000 said:
Does volume of the note sounds real low to you compared to smaller phones???
Click to expand...
Click to collapse
No, it is TOO LOUD. just a couple notches above zero and some music is already getting too loud. This is with headphones not internal speaker.
I just got back from swapping my phone from the AT&T store. Both models (black/white) on display had the hiss. I decided to go ahead and swap and maybe a new shipment had an updated phone. NOPE, the hiss is still there.
I've used 3 different in-ears (couldn't find any over the ear cans) and also tested on a captivate and galaxy tab 10.1. It's the Note that is doing the hissing and very noticeable even at low volumes. Easiest to hear is right when you track begins but before the music starts.
I think this might be a deal breaker for me. I love this thing though. Especially irritating with spotify between tracks.
music end -> hiss -> soundless gap -> hiss 0> music starts
Anyone know of an app (probably one that requires root) that can adjust the internal gain like what voodoo sound did?
This older thread I just found (post #5) seems to describe my problem as well.
http://forum.xda-developers.com/showthread.php?t=1538573
In order to quantify if this is hardware or not, try doing a factory reset (since you've returned your phone it shouldnt be that big of a deal).
Then, using the stock player on the phone (feel free to update Google Music or any other apps that came with the phone) see if you have the same hiss.
The factory reset is to determine if its possibly an app you installed at some point that is 'boosting' the sound internally without your knowledge. Sound boosting can create signal to noise problems.
Make sure your phone isnt plugged in / charging to anything (not plugged into a PC for example).
And try moving around to different locations, for example, in your house, try going into your front / back yard and see if the problem persists.
You also might try a different set of headphones and see if you have the same issue.
And lastly, if you plug in the headphones and reboot the phone, once the phone is fully booted, check to see if you hear any hiss WITHOUT any apps open?
As a side note, I just tested this (believe it or not, Ive had the Note for 3 weeks now and never plugged in headphones) using Seinnheiser studio HD 600 headphones (very expensive at around $600 for a pair and VERY power efficient) and have no hiss. However, the sound quality isnt all that great but that is a different issue.
littlewierdo said:
In order to quantify if this is hardware or not, try doing a factory reset (since you've returned your phone it shouldnt be that big of a deal).
Then, using the stock player on the phone (feel free to update Google Music or any other apps that came with the phone) see if you have the same hiss.
The factory reset is to determine if its possibly an app you installed at some point that is 'boosting' the sound internally without your knowledge. Sound boosting can create signal to noise problems.
Make sure your phone isnt plugged in / charging to anything (not plugged into a PC for example).
And try moving around to different locations, for example, in your house, try going into your front / back yard and see if the problem persists.
You also might try a different set of headphones and see if you have the same issue.
And lastly, if you plug in the headphones and reboot the phone, once the phone is fully booted, check to see if you hear any hiss WITHOUT any apps open?
As a side note, I just tested this (believe it or not, Ive had the Note for 3 weeks now and never plugged in headphones) using Seinnheiser studio HD 600 headphones (very expensive at around $600 for a pair and VERY power efficient) and have no hiss. However, the sound quality isnt all that great but that is a different issue.
Click to expand...
Click to collapse
Thanks for your helpful tips. Unfortunately, I've tried all that. Factory reset and all. As soon as the phone is ready to go, I listen to some music and hear the hiss immediately. Home or office, no difference. Not plugged in. Different in-ears. 4 different Notes.
I'm using very good in-ears (UE 700s, dual armature) and also decent SuperFi.3s.
Something interesting. Took a listen to a friend's good headphones just now and do not hear any hiss. Even if the media volume cranked up close the max, sounded fine, no hiss and listenably loud. With the in-ears, I can barely get half way up in volume because it becomes too loud.
Anyone here use in-ears? I know most prefer headphones or earbuds.
I'm going to try an inline attenuator tonight to see if that helps (if I can find it!).
What do you mean 'as soon as the phone is ready to go'?
As in, the instant you plug in headphones the hiss is there?
My guess is likely that the in-ear headphones are putting the sound right up to your ear drum and they likely are super sensitive.
The sound chip in the Note is not near to as good as the sound chip in the Captivate.
Im going to do a bit more experimenting with this as the only headphone I have are the seinnheisers and they arent exactly great for portable listening. I have a friend coming over tonight who has some very high quality in-ear headphones and Ill see if I hear anything with those.

High pitch noise when plugged into car's AUX

Full description of the problem:
I just got my EVO 4G LTE the other day, as a replacement to my original EVO 4G. However, I noticed when it was plugged into my car's AUX port, it puts out a high-pitch (like a teapot) noise. This noise happens as long as the headphone jack is powered up (something playing). Even if I turn the phone's volume down all the way, the high pitch is still heard. Otherwise, the audio from the phone can also be heard normally.
Things I've tried:
1. Different cables known to work. All act identically.
2. Headphones. They work fine.
3. Another car's AUX port. Worked fine.
4. Jiggling the jack on either end causes the pitch to change momentarily, but does not go away.
5. Slightly unplugging it from the car side (so one of the channels is not connected) makes it go away, leaving me to believe the high pitch noise is only coming from one channel (I believe the right channel, hard to tell).
Things I don't want to do:
1. Get a new car stereo.
2. Use a Bluetooth adapter. I already have the Stereoclip, and it doesn't do phone calls. Anything else sounds awful with music.
Does anyone have any solutions? I think its some sort of strange feedback/grounding issue, but I have no idea how I would fix this.
I don't have a solution, but I am experiencing the same issue with the phone plugged into my car's AUX. As long as music is playing I can't really hear the whine, but between songs it's pretty annoying.
I haven't tried playing around with the different EQ settings. By default it's been going to Beats. I may switch to a different setting or try a different player like Winamp. I'm currently using the HTC media player.
jasonkc25 said:
I don't have a solution, but I am experiencing the same issue with the phone plugged into my car's AUX. As long as music is playing I can't really hear the whine, but between songs it's pretty annoying.
I haven't tried playing around with the different EQ settings. By default it's been going to Beats. I may switch to a different setting or try a different player like Winamp. I'm currently using the HTC media player.
Click to expand...
Click to collapse
In my experience it has absolutely nothing to do with what app is being used, nor the EQ. It's nothing software as far as I can tell.
This fixes it:
http://www.amazon.com/Kensington-Reducing-SmartPhone-including-iPhone/dp/B0031U1ATQ
if your phone is plugged into the car charger and your audio jack is plugged in to listen to music. what our hearing is a ground loop from the cars alternator. try unplugging the power supply and see if that helps..
papadunit said:
if your phone is plugged into the car charger and your audio jack is plugged in to listen to music. what our hearing is a ground loop from the cars alternator. try unplugging the power supply and see if that helps..
Click to expand...
Click to collapse
The car charger makes no difference. I have tried using nothing but the audio cable in the phone and still had the static.
I was under the impression that a normal ground loop would require a charger, but...
Modplan: are you sure this will fix it if the noise occurs even without the charger plugged in? The noise is high-pitch, not really a hum, so I'm wary as to whether it will help here.
Its not a simple ground loop problem. I wired my power to the phone using a separate ground from the car's common ground and the issue still persisted.
Try cranking the volume up then when you hear the noise, start playing with the touchscreen. When i did this the noise started changing according to the movement of my fingers. I concluded that there is something going on with the grounding of the capacitive display thats causing another grounding issue, but its not an issue with the car, but an issue with the phone.
I didn't want to go through the vicious cycle of returning my phone over and over until i get one that didn't have this fault so i just went with a samsung hs3000 hardwired in to my car.
lacrossev said:
Its not a simple ground loop problem. I wired my power to the phone using a separate ground from the car's common ground and the issue still persisted.
Try cranking the volume up then when you hear the noise, start playing with the touchscreen. When i did this the noise started changing according to the movement of my fingers. I concluded that there is something going on with the grounding of the capacitive display thats causing another grounding issue, but its not an issue with the car, but an issue with the phone.
Click to expand...
Click to collapse
I wasn't able to replicate this.
I've had the same issue, but it's only when charging. I figured it had something to do with the aluminum body and, as papadunit said, a problem with grounding and your car's alternator and blah blah blah science.
modplan said:
This fixes it:
http://www.amazon.com/Kensington-Reducing-SmartPhone-including-iPhone/dp/B0031U1ATQ
Click to expand...
Click to collapse
I'm happy to report that this actually did solve the problem, amazingly. Thanks!
Actually had same issues this passed weekend but with my asus transformer. Was using it for navigation tethering from evo with both charging from my 400w inverter. Plugged transformer into aux and had same high pitching noise only when inverter was plugged in. Even tried different audio cables, same chit.
Sent from my EVO LTE
Headset Jack's other issues
I can confirm the same behavior with my EVO 4g LTE. My HTC Touch Pro 2 or Iphone 4s never had any of these issues with my vehicle's AUX jack. I also verified that if I turn the volume on the phone all the way down that the noise is audible on the vehicle's sound system. It also doesn't matter what player I use or if I add any equalizer settings to the audio. Finally, the noise is present whether the car is running or not.
Can you guys confirm: If you pause the audio on your player does the whine end about 4 seconds after and startup again if you press play? Or if you shut the player down does the noise go away shortly after?
I did some research and some said it has to do with the AUDIO DAC in the phone turning on and off as audio is played, paused, etc. If the output device has high sensitivity these sounds appear.
I had another issue with my Plantronics wired headset distoring when making phone calls. It did not present the whine but it distorted the callers voice as if the treble or bass was too high. I tried various audio settings but nothing changed. With other headsets the issue does not present itself. I think that the audio DAC is also sending higher/lower frequencies that are greater than some headsets can handle.
That Kensington thing that was posted can easily be made with common household parts. Basically all you need to do is take the big bulgy thing from any cable that would have it and attach it to your audio cable. It works best if you have one near each end of the cable. it's called a clamp-on ferrite bead and is just a clip with iron ferrite in the middle. Since i'm new I can't post a link buuuut what I can do is tell you the keywords to look up on google for the ehow link: cable magnets eliminate emi . enjoy!
lacrossev said:
Its not a simple ground loop problem. I wired my power to the phone using a separate ground from the car's common ground and the issue still persisted.
Try cranking the volume up then when you hear the noise, start playing with the touchscreen. When i did this the noise started changing according to the movement of my fingers. I concluded that there is something going on with the grounding of the capacitive display thats causing another grounding issue, but its not an issue with the car, but an issue with the phone.
I didn't want to go through the vicious cycle of returning my phone over and over until i get one that didn't have this fault so i just went with a samsung hs3000 hardwired in to my car.
Click to expand...
Click to collapse
Mine changes pitch according to my cars rpms
Sent from my EVO
I am getting this with headphones, i have used multiple brands and its hit or miss but more hit than miss :laugh:, anyone getting it in there headphone?
I was getting this issue until I installed a custom ROM. Running MeanROM right now with no background noise. Seems counterintuitive to me...but whatever.
J
Sent from my EVO using xda app-developers app
dankorzon said:
That Kensington thing that was posted can easily be made with common household parts. Basically all you need to do is take the big bulgy thing from any cable that would have it and attach it to your audio cable. It works best if you have one near each end of the cable. it's called a clamp-on ferrite bead and is just a clip with iron ferrite in the middle. Since i'm new I can't post a link buuuut what I can do is tell you the keywords to look up on google for the ehow link: cable magnets eliminate emi . enjoy!
Click to expand...
Click to collapse
http://www.radioshack.com/product/index.jsp?productId=3012599
Dankorzon, is this what you're talking about? If so I'm going to go get some tomorrow. I'm having this feedback issue too, but it is only when the car charger is plugged in. But I'd love to get rid of that sound. Drives me crazy.
SOLVED: I used a ground loop isolator
I posted earlier that I had the whining noise in my car even with the engine off. So it wasn't related to an alternator issue. I use a Blitzsafe (blitzsafe.com) device to add a line level input jack to my Honda Accord's stock radio interface. It works well with all my other devices except the Evo 4g LTE. This past weekend I did a little tinkering and noticed that if I pulled the RCA jack on one channel (left or right) every so slightly so the ground tabs weren't touching the noise disappeared. With only one channel connected the noise is not present. I'm not sure why the noise is present with both channels connected but it definitely pointed to a ground loop problem. I did some research in audio forums and some said that a wire could be jumpered so the RCA ground touches the receiver chassis and that would solve the problem. Unfortunately that did not do anything. I touched several different grounding points near the receiver but the sound was always present.
I went to Best Buy and purchased this: http://www.bestbuy.com/site/Fierce+...36.p?id=1218186610567&skuId=9855136&st=ground loop&cp=1&lp=1 It works great. For whatever reason the EVO 4g LTE's DAC must be sensitive or not have the right filter to block the ground signal. This explains why the Kensington product also works.
I also solved my headset issue. I can confirm that older corded Plantronic headsets will not work well with the EVO. The EVO distorts the speaker in the headset. I'm pretty sure it's because it sends lower bass frequencies than the speaker can handle. Only solution was to use a newer headset.
Thanks all for your help.
phiphiJR said:
http://www.radioshack.com/product/index.jsp?productId=3012599
Dankorzon, is this what you're talking about? If so I'm going to go get some tomorrow. I'm having this feedback issue too, but it is only when the car charger is plugged in. But I'd love to get rid of that sound. Drives me crazy.
Click to expand...
Click to collapse
That is what he is talking about, but that is NOT what the kennsington device is. Google "ground loop isolator" for info on what the kennsington is, it is NOT simply an aux cord with ferrite beads on it.
I've got the same problem in my car. This only happens when plugged into the charger. I'm going to try a ground loop isolation device which will arrive sometime next week.
I guess I don't understand why the phone would only do this when no music is playing though. It makes me think maybe a patch could solve the issue if HTC knew what the issue was.

[Q] Bluetooth to car stereo phone noise

Hi all. New here, so hopefully this will be concise enough.
T-mobile HTC Amaze 4g, no mods, all stock plus a few apps. Everything working fine on the phone. Purchased a Platronics BT headset, works OK; limited range, but passable. Just bought a Sony MEX-BT4100P car unit. Did the install myself (retired auto technician, so I know a little about doing it correctly). All working OK, BT pairs fine, functions all good (Phone book, redial, etc). Problem is a buzz noise during calls, only audible on the other end of the call, but it's pretty loud. Sound is similar to a slightly shorted mic cable. Voice is audible, just a loud background buzz. No noises with any other car stereo function. No noises with any other phone function.
Talked to car stereo vendor, they sent new unit and microphone. No change. Talked to HTC. They say that since the Plantroncs works fine, there's no problem with the phone.
I'm trying to find out if anyone else has experienced this specific issue and if so what had to happen to resolve it.
Any thoughts? I don't have another BT phone to try
Android 4.0.3, Sense 3.6. Don't know what other info might be helpful.
Thanks.
Charlie
Might be the headset
charlie.kaiser said:
Hi all. New here, so hopefully this will be concise enough.
T-mobile HTC Amaze 4g, no mods, all stock plus a few apps. Everything working fine on the phone. Purchased a Platronics BT headset, works OK; limited range, but passable. Just bought a Sony MEX-BT4100P car unit. Did the install myself (retired auto technician, so I know a little about doing it correctly). All working OK, BT pairs fine, functions all good (Phone book, redial, etc). Problem is a buzz noise during calls, only audible on the other end of the call, but it's pretty loud. Sound is similar to a slightly shorted mic cable. Voice is audible, just a loud background buzz. No noises with any other car stereo function. No noises with any other phone function.
Talked to car stereo vendor, they sent new unit and microphone. No change. Talked to HTC. They say that since the Plantroncs works fine, there's no problem with the phone.
I'm trying to find out if anyone else has experienced this specific issue and if so what had to happen to resolve it.
Any thoughts? I don't have another BT phone to try
Android 4.0.3, Sense 3.6. Don't know what other info might be helpful.
Thanks.
Charlie
Click to expand...
Click to collapse
Hey Charlie,
I remember having a plantonics headset. They were awful for me and they broke eventually. Did you try another headset? I think the headphones you're using could be the source of the problem. Hopefully someone else experienced in BT and headsets can assist you.
SuperAfnan said:
Hey Charlie,
I remember having a plantonics headset. They were awful for me and they broke eventually. Did you try another headset? I think the headphones you're using could be the source of the problem. Hopefully someone else experienced in BT and headsets can assist you.
Click to expand...
Click to collapse
The Plantronics headset is fine; it's the Sony car stereo BT function that's making the noise...
It's been a while since I've had the stock ROM on my phone, but try looking under the settings menu in dialer for 'noise suppression' and make sure it's ticked.
Does your head unit have a gain setting for the mic? I had a JVC unit that had one in the Bluetooth menu settings.
Actually, I just looked up your manual, you do have a mic gain.
It looks like you also have an echo canceller/noise canceller setting as well. See what playing with those do for you.
Failing those options, it sounds like you have interference in your mic. Try routing it away from any wires that carry current. You might try just holding it out in the open and making a test call.
Sent from my Amaze 4G using xda app-developers app
DarkMatter_74 said:
It's been a while since I've had the stock ROM on my phone, but try looking under the settings menu in dialer for 'noise suppression' and make sure it's ticked.
Does your head unit have a gain setting for the mic? I had a JVC unit that had one in the Bluetooth menu settings.
Actually, I just looked up your manual, you do have a mic gain.
It looks like you also have an echo canceller/noise canceller setting as well. See what playing with those do for you.
Failing those options, it sounds like you have interference in your mic. Try routing it away from any wires that carry current. You might try just holding it out in the open and making a test call.
Sent from my Amaze 4G using xda app-developers app
Click to expand...
Click to collapse
Head unit - I've tried all settings on mic gain and noise cancellation with no changes at all to the noise, although voice quality changed as expected.
Microphone has been pulled out of the car, literally to the full extent of its cable, with no change. I've wrapped the mic and its cable in tin foil and jumpered that tin foil shield to chassis ground with no change.
It does indeed to me sound like microphone interference, but nothing I do, including a different mic, changes the noise. Head unit and mic have been changed out for new.
Does it happen even with the engine off?
Sent from my Amaze 4G using xda app-developers app
DarkMatter_74 said:
Does it happen even with the engine off?
Sent from my Amaze 4G using xda app-developers app
Click to expand...
Click to collapse
Yes. On, off, no difference. In garage, out of garage, no difference.
charlie.kaiser said:
Yes. On, off, no difference. In garage, out of garage, no difference.
Click to expand...
Click to collapse
This tells me it's not interference, at least not from the car's electrical system. Do you happen to live under high tension lines?
Ok, here's what we've got in an extremely simplified flowchart:
mic------>head unit------->bluetooth-------->phone-------->person called
Follow the path, eliminate as you go.
1. Unplug the mic completely. Make a test call, see if your caller hears the noise still. If not, it's either the mic (replaced already, but not unheard of to get multiple bad ones. Try a desktop computer microphone?) or poor shielding in the radio (not easy to fix, even harder to locate.) If it's still there....still might be shielding in the head unit. Unlikely though.
2. You've already messed around with the head unit's settings. Nothing to do here.
3. Bluetooth. My radio used a USB bluetooth adapter, yours is built in. Can't try a different BT.
4. Phone. You don't know someone with a phone with bluetooth? If pairing with a different device results in a clear call, it's the phone (you could try rooting/updating/replacing it. Maybe they just don't like each other?) If the noise is still there with a different phone, it's either the head unit (you got another bad one or they just don't make them very well) or it's outside your control. Maybe the tower itself. You could try driving quite some distance away, till you're on a different tower. See if it's clear then.
Beyond all this, I really don't know of anything else to try, apart from getting a different head unit.
DarkMatter_74 said:
This tells me it's not interference, at least not from the car's electrical system. Do you happen to live under high tension lines?
Ok, here's what we've got in an extremely simplified flowchart:
mic------>head unit------->bluetooth-------->phone-------->person called
Follow the path, eliminate as you go.
1. Unplug the mic completely. Make a test call, see if your caller hears the noise still. If not, it's either the mic (replaced already, but not unheard of to get multiple bad ones. Try a desktop computer microphone?) or poor shielding in the radio (not easy to fix, even harder to locate.) If it's still there....still might be shielding in the head unit. Unlikely though.
2. You've already messed around with the head unit's settings. Nothing to do here.
3. Bluetooth. My radio used a USB bluetooth adapter, yours is built in. Can't try a different BT.
4. Phone. You don't know someone with a phone with bluetooth? If pairing with a different device results in a clear call, it's the phone (you could try rooting/updating/replacing it. Maybe they just don't like each other?) If the noise is still there with a different phone, it's either the head unit (you got another bad one or they just don't make them very well) or it's outside your control. Maybe the tower itself. You could try driving quite some distance away, till you're on a different tower. See if it's clear then.
Beyond all this, I really don't know of anything else to try, apart from getting a different head unit.
Click to expand...
Click to collapse
I did try unplugging the mic and the noise goes away, but according to Sony and the vendor, if a mic isn't plugged in, the entire audio chain gets muted automatically, so it's not much of a test. I'm going to see if I can dig up another mic like a computer mic with a mute or on/off switch and see what that might do.
I'm in a rural area and not too many cell phones I can borrow here. Might be one I can find...
I'll try another tower too; that's something I have not tried. But this really sounds like audio input chain noise rather than post-processing noise. I was an audio engineer in a previous life and I am still leaning towards mic-related issues...
Thanks.
charlie.kaiser said:
I did try unplugging the mic and the noise goes away, but according to Sony and the vendor, if a mic isn't plugged in, the entire audio chain gets muted automatically, so it's not much of a test. I'm going to see if I can dig up another mic like a computer mic with a mute or on/off switch and see what that might do.
I'm in a rural area and not too many cell phones I can borrow here. Might be one I can find...
I'll try another tower too; that's something I have not tried. But this really sounds like audio input chain noise rather than post-processing noise. I was an audio engineer in a previous life and I am still leaning towards mic-related issues...
Thanks.
Click to expand...
Click to collapse
Update... Tried driving to another location, and voila! The noise disappeared. I'm now getting normal audio from the system. And what's really strange... back at the house the noise is gone as well...
Thanks to all for the suggestions and ideas! Glad it wasn't something more difficult to fix...

Just got it - heaphone aux problem...again

I use an aux cable in my car to listen to music and podcasts.
when starting spotify i experienced incredible amounts of static, no matter what volume both the phone and car volume were set at.
Anybody else experience this?
Experiencing this in my work truck, will check my car after work
Sent from my LG-H830 using Tapatalk
Works fine in my car. Must be something else
Sent from my LG-H830 using Tapatalk
napafats said:
Works fine in my car. Must be something else
Sent from my LG-H830 using Tapatalk
Click to expand...
Click to collapse
Might be the worst static and fuzz ive ever experienced through a phone. Dont know what to do.
Any updates on this?
Mine comes out with an incredibly small amount of movement. Anyone else have this issue?
Nvm I just was being too easy on it. Requires a lot of pressure relative to anything else I've had for it to lock in.
Also you guys should dip a q-tip in rubbing alcohol and clean out your cars and phones headphone jacks. Especially in a work truck I imagine there's significant dust build up in there.
....cable
I found this too, even the headphones supplied need a fair amount of force to connect - at least they won't be pulled out so easy!
1 Maybe RF from cell communication leaking into audio or power cable.
2 Try with phone Not plugged into car power (I assume you run this with charger cable connected).
3 Try with better quality aux cable, maybe one that is shielded.
No fix. so aggravating.
Mine are flawless.
I just got the g5. Same issue. Tried multiple cables. Headphones work fine but not the aux cable
Just got my G5 a few days ago and I noticed this too.
In the car using a downloaded playlist on spotify and got terrible static noises (haven't tried any local music files as I don't use any!)
Sent from my LG-H850 using Tapatalk
I tried it in another head unit and it works.
Aux cable works in my Alpine but not in the Kenwood.
Ok guys and gals. I've been dealing with this for a bit and I found a fix of sorts. First off, two G5s (a buddies and mine) both had static in my car, but no static in his car or my mother's car. The difference being is that I have an aftermarket JVC player (removable face plate, auxiliary jack in front). The other two cars had factory stereos. I was guessing it was an aftermarket thing. Weird, I know, but that was the only commonality. Even more odd was that out of four phones the G5 was the only one having the hissy fit.
On Reddit some people were fixing this problem with a "ground loop isolator". It's basically this little noise filter device that plugs in the audio jack. Maybe $15 on Amazon. Anyways, I was about to order one, but before that I decided to take the head unit out of my car to see if any wires were loose. No wires were loose, but what I did find was an alternative 3.5mm jack in the back of my stereo. I'm sure not all stereos have a second port, but there's a decent chance. My particular head unit isn't what you'd call fancy by any means and it has one. So I plugged it in the back 3.5mm port and wouldn't you know, crystal clear sound!! I was so happy when it worked! Now instead of putting my stereo to "auxiliary" for the front port. I have to put it on "bt audio" to access the rear one. (whatever bt audio means, who knows, but it works).
So that's basically it, find out if your car stereo has a secondary 3.5mm port in the back and give it a shot. I didn't realize it at first, but right next to the front auxiliary port it actually says dual auxiliary/audio port. It could be an easy way to find out. As for rerouting the cord. I have a little pocket directly under my radio. There was a tiny hole in the back of the pocket/tray that I put the wire through. It looks cleaner than having it stick out from the faceplate of the radio any way.
If your stereo doesn't have a second 3.5mm port in the back You may want to check out a "ground loop isolator" from Amazon.
Good luck folks. Peace.
Not sure if could post links to the isolator. I'll give it a try.
Kresk - Here is the part that will boggle your mind with this issue. Go and play the stock LG sound file on the phone (The "High Quality" audio track). Once that plays, the static stops. Then switch to your regular music app - I use Spotify - and the music plays static free until the built in music app closes in the background. Then all the static comes back. If there was some way to force the phone to stay in whatever mode it uses for the High Quality audio track, it could be a great fix.
I've also found that there are three different "modes" of static I get on my phone too
1) Static Free
2) Low level of background static, volume independent (volume stays the same low background noise)
3) High level of static, volume dependent (Higher the volume, more static)
Typically when I do the thing where I get it into High Quality audio mode or whatever its using, I get 2 when immediately switching to Spotify. If I lock and unlock my screen, it goes to 3.
I'm going to go and try to plug into the "BT Audio" port on the back of my JVC head unit and see if it works. Will report back on it. I also have a ground loop isolator coming in the mail tomorrow, so I can give an update on that as well.
~PubstarHero
You might need a Ground Loop Noise Isolator, such as this: https://www.amazon.com/Mpow-Ground-Isolator-System-Stereo/dp/B019393MV2
I am thinking of getting one for an issue similar, but not the same as yours.
Same issues, in general. Static on most aux cables, and in my case some headphones don't work at all. My higher-end earbuds work flawlessly though, so go figure. Not sure what to do about it other than the ground fault isolator, though I was about to start looking into a Bluetooth-to-aux module.

Headphone Static - Xiaomi Hybrid Pro HD Earbuds

Hey, I'm not sure if anyone else is having this issue but when the dac isn't on, it's static during the music and when I'm in a call, there is static in calls on the left side. Does any one have a fix for this? I've had these headphones in my V20 and this is my first day with my V30+
lowridincrew said:
Hey, I'm not sure if anyone else is having this issue but when the dac isn't on, it's static during the music and when I'm in a call, there is static in calls on the left side. Does any one have a fix for this? I've had these headphones in my V20 and this is my first day with my V30+
Click to expand...
Click to collapse
Hi,
haha - and here I am and thought this phone was having hardware issues or something (does it ?) - perhaps it's just the headphones and they have an inherent flaw ?.
At least I'm getting the same weird behavior that at some points it plays fine but at others there's LOTs of (electric sounding) static on the left side.
It's actually never fully continuous for longer periods - it's more of a stuttery (multi-second) behavior for several seconds that this noise appears.
Also at first it was only via quad dac enabled - on AOSP Pie (internal LineageOS 16.0 build) it's existing no matter whether I play via Android Audio or Hi-Res Audio (USB Audio Player Pro).
And this exists on very low volume levels - there seems to be a connection that when the volume levels are raised (above 25/30% or so - I'm usually listening rather low but with this phone and hi-res - why not go higher ?)
it's way more salient and there also may be distortion involved:
An especially remarkable track in this regard is Thomas Bergersen's [from Two Steps From Hell] "Lost in Las Vegas" (around 08:30 or so towards the end, 10:14 long) towards the end - a rather electric part of the track and
when you raise the volume the output becomes rather distorted which might be connected to that "issue" and the left channel is also hissing/giving off static way more.
Perhaps audiophile folks and audio hardware experts have a better idea what this is hinting at ?
So:
not sure if it's an issue itself with the Xiaomi Hybrid Pro HD that they can't take that extra AMP (they are supposed to be low impedance and thus not require high output)
but somehow this behavior only occurs on the LG V30 - so perhaps there some kind of hardware issue ?
It seemed to have gotten better however from my impression with all those updates to the subsystems in the kernel - so it's perhaps just bad hardware design and the headphones are rather sensible
with their balanced armatures ?
Anyone else with balanced armature (BA) headphones observing a similar effect ?
I haven't had any trouble with my (dynamic driver) headphones. I wonder, have you messed around with forcing high impedance mode?
Murbert said:
I haven't had any trouble with my (dynamic driver) headphones. I wonder, have you messed around with forcing high impedance mode?
Click to expand...
Click to collapse
You mean high impedance adapters and such ?
Nope, only directly connecting the headphones.
And whereas before it only happened with the quad dac activated (which might provide more juice),
it now also seems to appear with the internal DAC used only (toggled via USB Audio Player Pro).
There might be a difference on how the internal and quad DAC interact or are active on recent Pie AOSP ROMs however ...
It still doesn't explain that weird behavior from the headphones themselves
Thx
I have tried it stock with no mods and it has static. Slide down the drop down and turn on the Dac and it goes away but only for music and system sounds. With calls it definitely makes noise all the time. I tried with a AOSP rom and it makes noise system wide because of the Dac. I did try my Phillips headphones and those work fine without the Dac on but I think it's a specific issue with these ear buds because I also have a 2nd pair and they also make the same noise.
lowridincrew said:
I have tried it stock with no mods and it has static. Slide down the drop down and turn on the Dac and it goes away but only for music and system sounds. With calls it definitely makes noise all the time. I tried with a AOSP rom and it makes noise system wide because of the Dac. I did try my Phillips headphones and those work fine without the Dac on but I think it's a specific issue with these ear buds because I also have a 2nd pair and they also make the same noise.
Click to expand...
Click to collapse
yeah, the Xiaomi Hybrid Pro HD are the only headphones so far that show this kind of "behavior" with the LG V30,
not sure what is up with that.
but I think it's a specific issue with these ear buds because I also have a 2nd pair and they also make the same noise.
Click to expand...
Click to collapse
very well could be, I wonder though where the reason for that might lie and if a fix of some sorts is possible - quite like those headphones and would like to use them on the go
zacharias.maladroit said:
yeah, the Xiaomi Hybrid Pro HD are the only headphones so far that show this kind of "behavior" with the LG V30,
not sure what is up with that.
very well could be, I wonder though where the reason for that might lie and if a fix of some sorts is possible - quite like those headphones and would like to use them on the go
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Trying to figure that out myself. I love these headphones now I have to find replacements

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